22001122012012 has 48 divisors (see below), whose sum is σ = 45462685780512. Its totient is φ = 9184380871680.

The previous prime is 22001122011989. The next prime is 22001122012031. The reversal of 22001122012012 is 21021022110022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97510413 + ... + 97735780.

It is an arithmetic number, because the mean of its divisors is an integer number (947139287094).

Almost surely, 2^{22001122012012} is an apocalyptic number.

22001122012012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22001122012012 is an abundant number, since it is smaller than the sum of its proper divisors (23461563768500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22001122012012 is a wasteful number, since it uses less digits than its factorization.

22001122012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195246418 (or 195246416 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22001122012012 its reverse (21021022110022), we get a palindrome (43022144122034).

It can be divided in two parts, 2200112 and 2012012, that added together give a palindrome (4212124).

The spelling of 22001122012012 in words is "twenty-two trillion, one billion, one hundred twenty-two million, twelve thousand, twelve".